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/*
net/netconnection.cc
This file is part of the Osirion project and is distributed under
the terms of the GNU General Public License version 2
*/
#include <sstream>
#include "sys/sys.h"
#include "net/net.h"
#include "core/application.h"
#include "core/gameconnection.h"
#include "core/netconnection.h"
#include "core/player.h"
namespace core
{
NetConnection::NetConnection()
{
}
NetConnection::~NetConnection()
{
}
void NetConnection::connect(std::string const &to_host, int to_port)
{
TCPConnection::connect(to_host, to_port);
if(connected()) {
FD_ZERO(&clientset);
FD_SET(fd(), &clientset);
}
std::ostringstream osstream;
osstream << "pif ";
game()->localplayer()->serialize_client_update(osstream);
osstream << '\n';
send(osstream.str());
}
void NetConnection::disconnect()
{
TCPConnection::disconnect();
FD_ZERO(&clientset);
}
bool NetConnection::has_messages() const
{
return (recvq.size() > 0);
}
void NetConnection::retreive(std::string & message)
{
if (recvq.size() > 0) {
message.assign(recvq.front());
recvq.pop_front();
} else {
message.clear();
}
}
// receive data and decode it into lines
void NetConnection::receive()
{
// TODO: binary mode data transfer
std::string datablock;
TCPConnection::receive(datablock);
if (error())
return;
while (datablock.size() > 0) {
// scan the datablock for enters
if (datablock[0] == '\n' || datablock[0] == '\r') {
if (messageblock.size() > 0) {
recvq.push_back(messageblock);
messageblock.clear();
}
} else {
if (messageblock.size() < net::FRAMESIZE) {
messageblock.append(datablock.substr(0,1));
} else {
con_warn << "Network message exceeds " << net::FRAMESIZE << " bytes!" << std::endl;
messageblock.clear();
}
}
datablock.erase(0,1);
}
datablock.clear();
}
void NetConnection::frame(float seconds)
{
timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec = 0;
fd_set readset = clientset;
int nb = select(fd()+1, &readset, NULL, NULL, &timeout);
if (nb == 0)
return;
if (nb == -1) {
con_error << "Network error on select()" << std::endl;
//perror("select");
abort();
}
if (FD_ISSET(this->fd(), &readset) && !error()) {
receive();
while (has_messages()) {
std::string message;
retreive(message);
parse_incoming_message(message);
}
}
}
// parse incoming client messages
/**
* The following incoming messages are parsed;
*
* msg info <text>
* msg public <name> <text>
* die
* ent
* sup
* pif
*/
void NetConnection::parse_incoming_message(const std::string & message)
{
std::istringstream msgstream(message);
std::string command;
msgstream >> command;
if (command == "msg") {
std::string level;
if (msgstream >> level) {
if (level =="info") {
if (message.size() > 9) {
con_print << message.substr(9) << std::endl;
}
} else if (level == "public") {
// FIXME - separate sender nickname
if (message.size() > 11) {
con_print << message.substr(11) << std::endl;
}
}
}
} else if (command == "die") {
unsigned int id;
msgstream >> id;
Entity *e = Entity::find(id);
//con_debug << "Received die entity id " << id << "\n";
if (localcontrol() == e)
localplayer()->player_control = 0;
if (e)
Entity::remove(id);
} else if (command == "ent") {
unsigned int type;
msgstream >> type;
//con_debug << "Received create entity type " << type << "\n";
switch (type)
{
case Entity::Default:
new Entity(msgstream);
break;
case Entity::Dynamic:
new EntityDynamic(msgstream);
break;
case Entity::Controlable:
new EntityControlable(msgstream);
break;
default:
break;
}
} else if (command == "sup") {
unsigned int id;
if (msgstream >> id) {
Entity *entity = Entity::find(id);
if (!entity) {
con_warn << "Update for unknown entity " << id << "\n";
} else
entity->recieve_server_update(msgstream);
}
return;
} else if (command == "pif") {
connection()->localplayer()->recieve_server_update(msgstream);
}
}
}
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